psamvault 0.1.2

A secure command-line password vault.

psamvault

A secure command-line password vault for the terminal.

Your credentials are encrypted locally before being sent to the server — the server never sees your plaintext passwords or your encryption key.

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How it works

login password
      │
      ▼
HMAC-SHA256 + pepper  →  master password
                                │
                                ▼
              PBKDF2 (600k rounds) + kdf_salt  →  login key
                                                        │
                                                        ▼
                                              decrypt VEK (AES-256-GCM)
                                                        │
                                                        ▼
                                              VEK encrypts every vault entry

• Pepper — unique per device, stored in ~/.psamvault/config.env. Never sent to the server.
• VEK (Vault Encryption Key) — a random 32-byte key generated at signup. Stored encrypted on the server; decrypted locally at login.
• kdf_salt — stored on the server, tied to your account. Ensures two users with the same password get different keys.

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Installation

pip install psamvault

Or install from source:

git clone https://github.com/psam-717/psamvault-cli
cd psamvault-cli/cli
pip install -e .

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Workflow

1. Configure

Run this once after installing. It generates your pepper and saves the API URL.

psamvault configure

 psamvault setup

 Press Enter to accept the default value shown in brackets.

 API URL [https://psam-vault-backend.onrender.com]:
 Generating a secure pepper for your vault...
 Configuration saved to ~/.psamvault/config.env

⚠️ Back up ~/.psamvault/config.env — it contains your pepper. Losing it means losing access to your vault.

To review your current config:

psamvault config-show

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2. Sign up

psamvault signup

Creates your account. Your VEK is generated locally, encrypted with your login key, and only the encrypted copy is sent to the server.

Password requirements:

• At least 8 characters
• At least one uppercase letter
• At least one digit

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3. Log in

psamvault login

Decrypts your VEK locally using your login password and saves it to a local session file (~/.psamvault/session.json). All vault commands use this session — you won't be prompted for your password again until the session expires.

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4. Check who's logged in

psamvault whoami

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Vault commands

Add a credential

psamvault add github.com --user [e-mail] --pass mysecret
psamvault add github.com --user [e-mail] --pass mysecret --notes "2FA enabled"
psamvault add github.com --user [e-mail]   # prompts for password

Retrieve a credential

psamvault get github.com
psamvault get github.com --copy   # copies password to clipboard, clears after 30s

List all entries

psamvault list

Shows site name, username hint, and last-updated date. Does not decrypt entries.

Update a credential

psamvault update github.com --pass mynewpassword
psamvault update github.com --user [e-mail] --pass newpass
psamvault update github.com --notes "2FA disabled"

Delete a credential

psamvault delete github.com

Permanent — prompts for confirmation first.

Generate a secure password

psamvault generate                          # 20-char password with symbols
psamvault generate --length 32
psamvault generate --length 16 --no-symbols
psamvault generate --length 20 --no-digits
psamvault generate --save github.com --user [e-mail]  # generate and save

Uses Python's secrets module (cryptographically secure).

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Recovery commands

Generate recovery codes

Run this while logged in to protect your account against a forgotten password.

psamvault generate-codes

Generates 8 one-time recovery codes. Each code encrypts your VEK — store them somewhere safe. Running this replaces all existing codes.

Check remaining codes

psamvault remaining-codes

Recover your account (forgotten password)

psamvault recover

Use one of your saved recovery codes to reset your login password without losing your vault data. The VEK is recovered and re-wrapped with your new login key — no vault re-encryption needed.

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Log out

psamvault logout

Revokes the refresh token on the server and deletes the local session file. Your encrypted vault data remains safely on the server.

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Command groups

All commands are available at the root level and also under grouped sub-commands:

Root shorthand	Grouped form
psamvault login	psamvault auth login
psamvault add	psamvault vault add
psamvault generate-codes	psamvault recovery generate-codes

Run any group without a subcommand to see its full command table:

psamvault auth
psamvault vault
psamvault recovery

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Configuration files

File	Purpose
~/.psamvault/config.env	API URL and pepper — back this up
~/.psamvault/session.json	Active session tokens and decrypted VEK

Both files are restricted to owner read/write only (chmod 600).

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Security notes

• Your login password is never stored or transmitted in plaintext
• Your VEK is stored locally only during an active session
• The server stores only encrypted blobs — it cannot decrypt your vault
• AES-256-GCM is used for all encryption (authenticated — detects tampering)
• PBKDF2-HMAC-SHA256 with 600,000 iterations for key derivation (NIST recommended minimum)